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Finding the Fourth Proportional to 60,357.98, 90,538.90 and 28,771.49

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Solution

The fourth proportional to 60,357.98, 90,538.90 and 28,771.49 is: 43,158.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,357.98 : 90,538.90 = 28,771.49 : x
  2. Step 2: Convert to fraction form
    60,357.98/90,538.90 = 28,771.49/x
  3. Step 3: Cross multiply
    60,357.98x = 90,538.90 × 28,771.49
  4. Step 4: Simplify right side
    60,357.98x = 2,604,939,210.38
  5. Step 5: Solve for x
    x = 2,604,939,210.38/60,357.98
  6. Step 6: Final answer
    x = 43,158.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.